10 citations · 18 across the 4 of their papers we have counts for
4 papers · 1 filter
Two-loop additive mass renormalization with clover fermions and Symanzik improved gluons
A. Skouroupathis, M. Constantinou, H. Panagopoulos
We calculate the critical value of the hopping parameter, , in Lattice QCD, up to two loops in perturbation theory. We employ the Sheikholeslami-Wohlert (clover) improved acti…
Lambda-parameter of lattice QCD with Symanzik improved gluon actions
A. Skouroupathis, H. Panagopoulos
We compute the ratio Lambda_L/Lambda_MS, where the scale parameter Lambda_L is associated with a lattice formulation of QCD. We consider a 3-parameter family of gluon actions, whic…
Higher loop renormalization of fermion bilinear operators
A. Skouroupathis, H. Panagopoulos
We compute the two-loop renormalization functions, in the RI' scheme, of local bilinear quark operators , where denotes the Scalar and Pseudoscalar Dirac matrices, in…
Improving perturbation theory with cactus diagrams
Martha Constantinou, Haralambos Panagopoulos, Apostolos Skouroupathis
We study a systematic improvement of perturbation theory for gauge fields on the lattice [hep-lat/0606001]; the improvement entails resumming, to all orders in the coupling constan…